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high7.8

CVE-2017-1000111

Linux kernel: heap out-of-bounds in AF_PACKET sockets.

Impact

Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.27 before 3.2.92
from 3.3 before 3.10.108
from 3.11 before 3.16.47
from 3.17 before 3.18.65
from 3.19 before 4.1.44
from 4.2 before 4.4.82
RedhatEnterprise Linux
Versions 5.0, 6.0, 7.0
RedhatEnterprise Linux Desktop
Versions 6.0, 7.0
RedhatEnterprise Linux Server
Versions 6.0, 7.0
RedhatEnterprise Linux Server Aus
Versions 7.4, 7.6
RedhatEnterprise Linux Server Eus
Versions 7.4, 7.5, 7.6
RedhatEnterprise Linux Server Tus
Versions 7.4, 7.6
RedhatEnterprise Linux Workstation
Versions 6.0, 7.0
DebianDebian Linux
Versions 8.0, 9.0

Weakness classification

CWE-787

References